[Lustre-discuss] Performance parameters
Enrico Morelli
morelli at cerm.unifi.it
Fri Jun 6 07:45:44 PDT 2008
Dear all,
which are the parameters that I can set to improve the
lustre performance?
Because I have very worse performance using lustre 1.6.4.3.
An 'ls' on a directory containing 1000 files gets 30s (on a NFS
filesystem the same 'ls' gets 0.3s)
The same for a file creation/copy.
On lustre:
# time dd if=/dev/zero of=test.txt bs=1k count=1024000
1024000+0 records in
1024000+0 records out
real 1m39.423s
user 0m0.510s
sys 0m10.940s
# time cp test.txt test.out
real 1m2.526s
user 0m0.000s
sys 0m3.550s
On NFS:
# time dd if=/dev/zero of=test.txt bs=1k count=1024000
1024000+0 records in
1024000+0 records out
real 0m11.920s
user 0m0.438s
sys 0m9.864s
# time cp test.txt test.out
real 0m15.012s
user 0m0.012s
sys 0m2.444s
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| ENRICO MORELLI | email: morelli at CERM.UNIFI.IT |
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